HAZIM ALKAWAZ, M. .; WAILI, T.; IWANA IMRAN , N. A. . Digital Watermark Copyright Protection with QR Code. International Journal on Perceptive and Cognitive Computing, [S. l.], v. 6, n. 1, p. 19–23, 2020. Disponível em: https://journals.iium.edu.my/kict/index.php/IJPCC/article/view/141. Acesso em: 20 sep. 2021.